January weather forecast
Exton, PA

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Weather in January

The start of the year in Exton, Pennsylvania, is marked by winter's chill. The city experiences cold weather with temperatures ranging from 24.3°F (-4.3°C) to 36.1°F (2.3°C), flirting with the frost mark - a wintry start to the year. The blankets of snow can often be seen, owing to the average snowfall of 1.26" (32mm) recorded across five days of the month. While the climate stays mostly cloudy with a significant humidity level, the wintry sunshine breaks though for a moderate duration each day. Layering up is recommended for outdoor activities in the month.

Temperature

In Exton, the month of January registers the lowest temperatures, averaging 36.1°F (2.3°C) at the peak and 24.3°F (-4.3°C) at the lowest.

Humidity

In January, the average relative humidity in Exton, Pennsylvania, is 76%.

Rainfall

The month with the least rainfall is January, when the rain falls for 5 days and typically collects 0.79" (20mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In Exton, Pennsylvania, in January, snow falls for 5.4 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, there are 18.5 snowfall days, and 5.51" (140mm) of snow is accumulated.

Daylight

In January, the average length of the day in Exton is 9h and 43min.
On the first day of the month, sunrise is at 7:24 am and sunset at 4:47 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:19 pm EST.

Sunshine

In Exton, the average sunshine in January is 4.6h.

UV index

The months with the lowest UV index in Exton are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 2 in January suggests the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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Frequently asked questions

What is the coldest time of year in Exton?

In Exton, January records the average lowest temperatures, peaking at 36.1°F (2.3°C) and reaching a low of 24.3°F (-4.3°C).

How cold is January in Exton?

An average high-temperature, in January, in Exton, is 36.1°F (2.3°C) and the average low-temperature is 24.3°F (-4.3°C).

What is the average humidity in January in Exton?

In January, the average relative humidity in Exton is 76%.

What is the driest month in Exton?

The month with the least rainfall in Exton, Pennsylvania, is January, when the rain falls for 5 days and typically collects 0.79" (20mm) of precipitation.

How many days does it rain in January in Exton?

In Exton, during January, the rain falls for 5 days and regularly aggregates up to 0.79" (20mm) of precipitation.

How many days does it snow in January in Exton?

In January, in Exton, it is snowing for 5.4 days. Throughout January, 1.26" (32mm) of snow is accumulated.

How many hours of daylight does Exton have in January?

In Exton, the average day length in January is 9h and 43min.

When is the sunrise / sunset in January in Exton?

In January, on the first day of the month, sunrise is at 7:24 am and sunset at 4:47 pm. On the last day of the month, in Exton, sunrise is at 7:12 am and sunset at 5:19 pm EST.

How many hours of sunshine does Exton have in January?

In Exton, the average sunshine duration in January is 4.6h.

What are the months with the lowest UV index in Exton?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Exton, Pennsylvania.

What is the UV index reading in January in Exton?

In January, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Exton, PA

Average temperature in January - Exton, PA
  • Average high temperature in January: 36.1°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in January: 24.3°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in January
Exton, PA

Average pressure in January - Exton, PA
  • Average pressure in January: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in January
Exton, PA

Average wind speed in January - Exton, PA
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in January
Exton, PA

Average humidity in January - Exton, PA
  • Average humidity in January: 76%

The months with the highest relative humidity are February and October (79%).
The months with the lowest relative humidity are April and July (73%).

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Average rainfall in January
Exton, PA

Average rainfall in January - Exton, PA
  • Average rainfall in January: 0.79"

The wettest month (with the highest rainfall) is August (1.89").
The driest month (with the least rainfall) is January (0.79").

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Average rainfall days in January
Exton, PA

Average rainfall days in January - Exton, PA
  • Average rainfall days in January: 5 days

The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (5 days).

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Average snowfall in January
Exton, PA

Average snowfall in January - Exton, PA
  • Average snowfall in January: 1.26"

The month with the highest snowfall is March (1.57").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in January
Exton, PA

Average snowfall days in January - Exton, PA
  • Average snowfall days in January: 5.4 days

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Exton, PA

Average daylight in January / Average sunshine in January - Exton, PA
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in January: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in January
Exton, PA

Average sunshine days in January - Exton, PA
  • Average sunshine days in January: 20.3 days

The month with the most sunshine days is November (21.7 days).
The month with the least sunshine days is June (13.3 days).

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Average UV index in January
Exton, PA

Average UV index in January - Exton, PA
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in January
Exton, PA

Average cloud cover in January - Exton, PA
  • Average cloud cover in January: 47

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in January
Exton, PA

Average visibility in January - Exton, PA
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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Exton, Pennsylvania, USA

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